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- W2017139721 abstract "High altitude and long endurance (HALE) vehicle always adopt straight or swept configuration, which leads to the problem that the wings of UAV have high aspect ratio and are very flexible. This kind of flexible wing exhibits large deformation when aerodynamic forces are loaded on them and the structural nonlinearity should be considered. So the dynamic and flutter characteristics will be changed. In the engineering applications, the effects of structural geometric nonlinearities on the air vehicle design are the most concerns of aeroelasticity before a systematic flutter analysis for the air vehicle. because the solution for nonlinear flutter speed based on the CFD-CSD method is complex and time consuming. In this paper, we propose a simple and efficient approach that can analyze the effect of structural geometric nonlinearities on the flutter characteristics of high aspect ratio wing quickly. And a straight wing and a straight-swept wing are analyzed to verify the feasibility and efficiency of the proposed method. It is found that the effect of structural geometric nonlinearities has a strong effect on the flutter characteristic of the straight wing, but is weak on the straight-swept wing. And finally the impact of swept angle on the dynamic and flutter characteristics of straight-swept wing is also discussed." @default.
- W2017139721 created "2016-06-24" @default.
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- W2017139721 creator A5049451773 @default.
- W2017139721 date "2012-07-01" @default.
- W2017139721 modified "2023-09-27" @default.
- W2017139721 title "The Effect of Structural Geometric Nonlinearities on the Flutter of the Straight and Swept Wing Configurations" @default.
- W2017139721 cites W2314970398 @default.
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- W2017139721 doi "https://doi.org/10.4028/www.scientific.net/amm.189.306" @default.
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